Sniffer Snoop and Hot Foot show up uninvited because Sniffer thinks Midnight is smart enough to be his assistant. But Doc can't stand him and plots to get rid of him.; Black X meets a clever and ruthless antagonist inside his own front lines.; A daring carnival murderer pitted against Rookie Rankin.; Larry is a stuntman on a set filming action scenes in the land of the Khan.; The Nazis have reported The Marksman for dead, and are up to some new dirty tricks.; Lady Satan deduces the dual identity of Chuck Lane and attempts to blackmail him into helping her commit crimes. At first he pretends to go along with her scheme, but fools her in the end.; Count DeChange is broke and wants to marry Brenda Banks for the money, so he plans to stage a fake fight to appear like a knight in shining armor. However, some crooks kidnap her hoping to cash in on a large ransom from the Count. Although she is caught without her mask and costume, she fools her captors into thinking that Lady Luck has snuck into their lair. As the Police take her battered quarry away, Lady Luck leaves a new calling card behind: the ace of diamonds.